Under Armour Perpetl Ss. Women's short-sleeved T-shirt in a loose cut made from extremely soft and light fabrics, offering excellent breathability and comfort during wear. The materials used dissipates moisture and dries faster. Contoured hem provides better coverage. Unique back design offers extreme ventilation and a unique style. Technology: Moisture Transport System (Wicks sweat away from your body to the surface of your clothes, making it easier to dry and keep you safe longer). Material: 80% Polyester, 20% Tencel